From 80a82486157077bf62ba51bbcd4f7891ae7b6a21 Mon Sep 17 00:00:00 2001
From: Peter Dettman <peter.dettman@bouncycastle.org>
Date: Sun, 21 Nov 2021 22:22:16 +0700
Subject: Fix return values

---
 crypto/src/asn1/ConstructedOctetStream.cs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/crypto/src/asn1/ConstructedOctetStream.cs b/crypto/src/asn1/ConstructedOctetStream.cs
index 829a9a427..63d7d9d94 100644
--- a/crypto/src/asn1/ConstructedOctetStream.cs
+++ b/crypto/src/asn1/ConstructedOctetStream.cs
@@ -21,6 +21,9 @@ namespace Org.BouncyCastle.Asn1
 
 		public override int Read(byte[] buffer, int offset, int count)
 		{
+            if (count < 1)
+                return 0;
+
 			if (_currentStream == null)
 			{
 				if (!_first)
@@ -66,11 +69,11 @@ namespace Org.BouncyCastle.Asn1
 			if (_currentStream == null)
 			{
 				if (!_first)
-					return 0;
+					return -1;
 
                 Asn1OctetStringParser next = GetNextParser();
                 if (next == null)
-					return 0;
+					return -1;
 
 				_first = false;
 				_currentStream = next.GetOctetStream();
-- 
cgit 1.4.1